74 CELASTBINE^;. 



more or less pendulous: fl. 1% lines long: fr. 2 — 3 lines broad.— Copious 

 in the Coast Bange hills, preferring cool northward slopes and the banks 

 of streams; the terror of many excursionists and of some botanists, and 

 commonly called Poison Oak. 



* * Flowers yellow, in small dense spikes, appearing before the leaves; 

 drupe red, hairy; putamen smooth. 



2. E. trilobata, Nutt. Diffusely branching, 2—5 ft. high, aromatic- 

 scented, more or less pubescent when young: terminal leaflet thrice as 

 large as the lateral, euneate-obovate, 1 — 2 in. long, 3- lobed and coarsely 

 toothed above the middle; lateral pair round-obovate, scarcely lobed, but 

 coarsely crenate: spikes ^ — M m - l 0I1 ff> short-pedicelled: fr. viscidly 

 hirsute, the thin pulp keenly and pleasantly acid. Var. qninata, 

 Jepson. Leaves apparently quinate, the terminal leaflet being 3-parted, 

 the lateral ones little larger than the lateral divisions of the terminal 

 one. — Perhaps only the variety is found within our limits; and this 

 plentiful in the Vaca Mts. and northward. 



Order XXVIII. CELASTRINE>£. 



Shrubs with simple exstipulate leaves, and small perfect regular 

 flowers. Sepals and petals 4 or 5, imbricate in bud. Stamens as man}' 

 as the petals, inserted alternately with them on or under the edge of a 

 perigynous disk. Ovary free from the calyx, but immersed in the disk 

 or encircled by it, 3- or 4-celled; cells 1- or several-ovuled. Fruit cap- 

 sular, loculicidal : seed without albumen. 



1. EUONYMUS, Theophr. (Burning-Bush). Deciduous shrub with 

 4-angular green branches, opposite leaves, and flowers in loose 

 axillary cymes. Sepals and petals 4 or 5, widely spreading. Stamens 

 very short, on a broad angled disk. Ovary immersed in the disk, 3 — 5- 

 celled; style short or 0. Capsule coriaceous, 3— 5-lobed and -valved. 

 Seeds 1 — 4 in each cell, covered with a fleshy red aril. 



1. E, occidentalis, Nutt. Erect, slender, 7—15 ft. high: leaves 

 ovate or oblong-lanceolate, acuminate, serrulate, short-petioled, 2 — 4 in. 

 long: peduncles slender, 2— 4-flowered: fl. 5-merous, dark-brown purple, 

 4—6 lines wide: fr. smooth, deeply lobed. — Marin and San Mateo 

 counties, along mountain streams. 



Order XXIX. RHAMNE£. 



Shrubs with simple leaves; stipules minute, mostly caducous. 

 Flowers 4— 5-merous, small, perfect or unisexual, regular. Calyx 4—5- 

 cleft, valvate in aestivation. Petals cucullate or convolute, sometimes 0. 

 Stamens as many as the calyx-lobes and alternate with them, i. e., 



